You need to find Dell Service Tag if you purchase a new Dell laptop like this one, and you’re in the USA, that will provide you many information, like warranty, your Dell laptop model, the compatibility, upgrade options, etc.
To have this option, you will need a unique number, which contains 7 characters to identify your laptop.
Although in the product support knowledge base, it states not all Dell products have this unique tag, but for laptops and computer, they have Service tag.